1901-2000 Degrees Fahrenheit 1 51.7 48.0 3.7 103 27 1895 2018 1937 1938 top-third 2 50.3 46.6 3.7 113 17 1978 1950 1938 1937 top-third 2020 3 48.8 46.6 2.2 101 28 1978 1932 1938 1937 top-third 4 50.3 48.3 2.0 101 28 1977 1932 1938 1937 top-third 1916 5 53.3 51.4 1.9 103 26 1977 1932 1938 1937 top-third 2018 6 56.8 55.3 1.5 103 26 1977 1932 1938 1937 top-third 1911 7 60.2 58.7 1.5 103 26 1977 1932 1938 1937 top-third 1909,2012 8 62.6 61.4 1.2 101 28 1977 1932 1938 1937 top-third 2005 9 64.2 63.2 1.0 99 30 1977 1932 1938 1937 top-third 1903,2000,2005 10 65.0 63.9 1.1 101 28 1977 2017 1938 1937 top-third 1898,1926,2022 11 64.8 63.8 1.0 101 28 1977 2017 1938 1937 top-third 1898,1991,2018 12 64.6 63.1 1.5 114 15 1977 2017 1938 1937 top-third 2013 18 61.4 60.5 0.9 104 24 1977 2017 1938 1938 top-third 1917,1938,1957,2012 24 63.8 63.1 0.7 97 31 1978 2017 1936 1938 top-third 1909,1955,1987 36 64.3 63.1 1.2 116 11 1970 2018 1938 1934 top-tenth 1922,1928,2013 48 63.9 63.1 0.8 111 15 1970 2019,2020 1938 1937 top-third 1909,1912,1929,1950,1952,1957,2002,2008,2017 60 63.9 63.1 0.8 114 11 1970 2020 1938 1938 top-tenth 1925,1935,1936,1937,1938,1950,2018